Emma and The Dawn Piper head towards the climax of their adventure - crossing the Pontcysyllte Aqueduct - but will the engine hold out long enough for Emma to realise her dream? Carrie takes Mabel on a cruise, and mum Della has a surprising announcement. Married couple and experienced boaters Paul and Anthony are upgrading to a new eco-boat. After a visit to the boat builders to check on progress, Anthony heads to his land-based job and Paul is left to steer the boat alone.

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